Combined blower and suction device



March 4, 1930. A. A. BREUER COMBINED BLOWER AND SUCTION DEVICE Filed June 6. 1927 Ill/I VE UR Hui am HBreue/ Patented ,Mar. 4, 1930 ADAM BREUER, or CHICAGO, ILLINOIS com amnn BLOWER AND SUCTION DEVICE Application filed June 16,

This invention relates to a combined blower and suction device of the portable type, capable of ready change from a blower into a vacuum cleaner.

It is an object of this invention to provide an improved portable blower and suction device wherein the construction is considerably simplified, parts made readily interchange able and manufacturing costs greatly reduced.

2' Other and further important objects of this invention will become apparent from the following description and appended claim.

On the drawings:

. Figure 1 is a side elevational View of the device employed as a suction cleaner.

I Figure 2 is an end elevational view of the same with attachments removed. A

Figure 3 is an enlarged fragmentary sectional View taken on line IIIIII of Figure 2. I

Figure 4 is a fragmentary sectional view taken on line IVIV of Figure 1 with parts I removed.

- Figure 5 is a detailed sectional view of a coupling member.

Figure 6 is a longitudinal sectional View of a modified form of attzi'chment.

Figure 7 is a reduced end elevational view of the device employed as a blower. In the embodiment of my invention illustrated, the reference numeral 1 indicates a fan casing provided with an axial tubular Imember 2 forming an air inlet port, and a tangential tubular member 3 forming an air discharge port. A motor casing 4 is adapted to be secured to the fan casing 1, on the opposite side from the air inlet port, by means of bolts or screws 5. Preferably, both casings are formed of aluminum, so that the weight of the device may be minimized.

As illustrated, a D-shaped handle 6 is secured to the motor casing in such a position that the central gripping portion 7 of said handle 6 extends parallel to the tangential tubular member 3. A slot 8 is formed in the end of the handle 6 which is normally uppermost when the device is in use. A supporting strap 9, adapted to be passed through said 1927. Serial no. 1995193;

slot 8, serves to support the weight of the deyice from the shoulder of the operator leaving the gripping portion 7 of the handle 6 unobstructed.- Said handle 6 is formed hollow to accommodate a snap-switch for controlling the motor circuit, said switch being operable by a lever 10 projecting laterally througha slot 11 in the handle gripping portion 7. A removable cover plate 12 furnishes ready access to the inclosed snapswitch. v h

When the device is used as a vacuum cleaner, as illustrated in Figure 1, an attachment, designed as a whole by the reference numeral 13, is provided for the air inlet port for connecting a hose 14 thereto. A coupling 15 serves to connect a dust bag 16 to the outlet port. The attachment 13, (Figure v4) comprises a nozzle 17, having a serrated end 18 for attachment to the hose 14', and a machined annular flange 19 formed at its opposite end with shoulders 42. A coupling ring 20 is adapted to engage the shoulders 42 of the annular. flange 19 of said nozzle 17, and also to engage spaced lugs 21 formed on the periphery of the tubular member 2. For this purpose, the inner endof the coupling ring 20 is provided with an inturned flange 22, (Figures 4 and'5) having slots 23 formed therein to permit passage therethrough of said lugs 21. The inturned annular flange 22 of the coupling ring 20 is of varying width, (Figure 5) to provide a recess 24 for receiving the lugs 21 and an inclined face 26 for coaction with said lugs 21, said lugs being also provided with inclined cam surfaces 25. The coaction between the inclined face 26 of the flange 22 and the lug surfaces 25 serves to attach the nozzle 17 when the same is turned relative to the tubular member 2, but at the same time allows swiveling action between the machined faces of thenozzle 17 and the coupling ring20, to prevent the at tached hose from becoming twisted.

A gasket 27 may be positioned between the abutting inner faces of the nozzle 17 and the tubular member 2.

A perforated metal plate 28, preferably dished outwardly, is adapted to be positioned within the opening providedby the tubular member 2. llhe dished or cupped portion of this plate is formed so as to serve as a handle for enabling said plate to be readily attached to or removed endwise from its mounting. For this purpose, said tubular member 2 is provided with a discontinuous interior annular shoulder 29, (Figure against which said perforated plate 28 is adapted to rest. Oppositely spaced lugs 30, outwardly spaced from the annular shoulder 29, serve to retain said plate 28 in position. In order that the plate 28 may be inserted into place and removed easily, said plate is provided with peripheral recesses 31 through which said lugs 30 may pass. After the plate 28 is inserted beyond the lugs 30, it is then turned'to bring the recesses 31 outof register with the lugs 30. It is thus apparent that the plate 28 may be readily inserted or removed without the use of the customary separable retaining rings.

In Figure 6, there is shown a modified form of a nozzle 32 which may be attached to either of the tubular members 2 or 3. Said nozzle 32 is provided with a tubular serrated end 33 and an enlarged flanged end 34 for attachment to the tubular member 3. Said tubular her in communication therewith, a perforated plate positioned in the open end of said tubular member and means including a shoulder and lugs connected to said member for detachably retaining said plate in position between the same, said plate having recesses to allow said lugs to pass therethrough and an Illinois.

' ADAM A. i BREUEIL member 3 is provided with lugs 35 similar to I the lugs 21, said lugs 35 having inclined cam surfaces 36 for cooperation with the inner face 37 of the inwardly directed flange 38. Said flange 38 is provided with slots 39 through which said lugs 35 may pass, when assembling, after which the nozzle 32 is turned relatively to the tubularmember 3 to obtain tight frictional engagement between the surfaces 36 and 37. As before, a gasket 40 provides a tight joint between the end of the tubular member 3 and the interior face of the flange 34. i

When the device is to be used as a blower,

as shown in Figure 7, an extended nozzle 7 member 41, formed of hard rubber or the like, is employed. Said nozzle 41 is constructed similarly to the nozzle 32 already described,

ice

so that it may be readily attached to the tu- I bular air discharge port 3.

It will be appreciated that theconstruction of my device provides for the ready attachment of suitable nozzles to transform the device into a blower or a vacuum cleaner at will, and that the attaching nozzles are interchangeable at will. It should be further appreciated that because of the simplicity of the structure, the manufacturing cost may be considerably reduced.

' 'I am aware that many changes may be made,and numerous details of construction may be varied through a wide range without departing from the principles of this invention, and I therefore do not purpose limiting the patent granted hereon, otherwise than necessitated by the prior art."

- I claim as my invention [In a combined blower and suction device including a fan casing having a tubular memisc 

